Study On Ore-controlling Regularity Of Hexi Fault And Metallogenic Regularities Of Gold Deposist In Jiaodong

Jiaojia faults,located in the area of Jiao dong is very important because it strictly controls the distribution of multiple deposits.Jia jia fault zone is a large fracture in the region,which can be divided into several levels based on the size and characteristics.Among them,the main faults of the Jia jia fault zone control the majority gold mine such as Yaojia gold mine,new town gold,Hedong gold mine,Jiaojia gold mine,Matang gold mine,temple gold mine;In Jiaojia subprime fault zone lie the gold deposits such as Wange Chen family gold mine,Hedong gold mine,Fujia gold mine,Wangershan gold mine,and they are all controlled by Wangershan fault.Hexi gold mine is also the one controlled by a subprime fault zone,He xi fault,which is the main target of the study.Fractures of different levels have different effect on controlling of the ore deposits but they also have something In common.This article mainly targets on Hexi fault system to clarify its ore-controlling features,and meanwhile,contrast ore-controlling characteristics of these subprime faults and the main ore-controlling fracture of Jiaojia faults.On the basis of above and the study of the Jiaojia metallogenic belts,the metallogenic pattern of the Hexi gold mine was concluded.Jiaojia fault,when compared with other factors,has great impact on the gold which is controlled.As the subprime fracture of Jiaojia fault,Hexi fault have similarities to the main faults of Jiaojia gold ore-controlling fault,but it also has its own particularity on ore-controlling features: Hexi fracture and Houxi fracture form the unique inverse "S" structure;There is a unique structure of joint fissures,and a large number of minerals are deposited in them.Many ore bodies are fine veins,net veins but those lies in Jiaojia main fault has the characteristic of disseminated mineralization,which is obviously different from the ones in Hexi fault.The vines lie in the dense joints and fissures with concentrated distribution and the majority of them are distributed in pronounced widely-spread potassium belt.Hexi gold deposit and Jiaojia fracture zone altered rock type gold deposit” have similar metallogenic regularities.The mineralization process of them have four stages.The metallogenic temperature is medium temperature,and the mineralization age is the cretaceous period.Sulphur is mainly derived from mantle magma and may be mixed with seawater.